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- Linux kernel main function analysis and analysis
- Linux kernel main function analysis and analysis The Linux kernel is a large and complex system, in which the main function plays a vital role. It is the entry point of the entire system and is responsible for initializing various subsystems, drivers and kernel modules. Finally start the entire operating system. This article will analyze and analyze the main function of the Linux kernel, and demonstrate its key functions and execution flow through specific code examples. In the Linux kernel, the entry point of the main function is start_k in the init/main.c file.
- Linux Operation and Maintenance 542 2024-03-14 11:27:04
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- Understanding the disk layout of ext2 file system in Linux
- In the Linux operating system, there are many file systems used, among which the ext2 file system is the most basic and common one. Understanding the disk layout of the ext2 file system is important to understanding how the file system works and how data is stored. In this article, we will introduce the disk layout of the ext2 file system, including super block, block group descriptor table, inode table, data block, etc., and provide specific code examples to help readers better understand. 1. SuperBlock in ext2 file
- Linux Operation and Maintenance 779 2024-03-14 11:21:04
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- What is the standard path for storing RPM packages in Linux systems?
- "Standard paths and code examples for RPM package storage in Linux systems" In Linux systems, RPM (RedHatPackageManager) packages are a standard format for software package management. When we use tools such as yum to install software, we are actually installing or updating RPM packages in the system. The path where RPM packages are stored in the system has certain specifications. The following will introduce the standard paths where RPM packages are stored in common Linux distributions and provide some code examples.
- Linux Operation and Maintenance 482 2024-03-14 11:18:03
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- The function and application of i-node number in Linux system
- Title: The function and application of i-node number in Linux system In Linux system, i-node number (inodenumber) is a very important concept, which is used to identify files and directories in the file system. Each file or directory has a unique i-node number. Through the i-node number, you can quickly locate and access the metadata information of the file, including the file's permissions, owner, size, creation time, etc., without having to rely on the file name to find it. . The function and application of i-node numbers play an important role in file system management and data recovery.
- Linux Operation and Maintenance 926 2024-03-14 11:15:04
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- How to execute service restart command in Linux?
- In Linux, to execute the service restart command, you usually need to use the Systemd service manager. Systemd is a widely used service management tool on Linux, which can easily manage and control system services. The following will introduce how to execute the service restart command through Systemd in Linux and provide specific code examples. Step 1: Confirm the service name. Before executing the service restart command, you first need to confirm the name of the service to be restarted. You can view the list of services running on the system with the following command:
- Linux Operation and Maintenance 431 2024-03-14 11:06:04
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- Detailed explanation of fork function in Linux
- fork() is a very important system call in Linux and other Unix-like systems. It is used to create a new process. This new process is a copy of the current process, called a child process. The child process will obtain a copy of the parent process's code, data, heap, stack, etc., but the two processes will have different process IDs and some other resources, such as open file descriptors.
- Linux Operation and Maintenance 986 2024-03-14 10:23:41
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- The Importance and Function of Linux Hostnames
- Analysis of the Importance and Function of Linux Host Name In Linux systems, host name is a very important configuration item. It is not only used to identify the name of the current system, but also affects network communication and system management. In this article, we will analyze the function and importance of host names in detail, and provide some specific code examples to help readers better understand and manage host names. 1. The importance of the host name. The host name plays the role of connecting various devices and identifying the devices in a network environment. It allows users to easily distinguish between different devices.
- Linux Operation and Maintenance 1180 2024-03-14 10:18:04
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- Explore the disk storage mechanism in Linux ext2 file system
- In computer science, a file system is a mechanism used by an operating system to manage and organize files on a storage device. Among them, the ext2 file system is the earliest file system used in the Linux operating system. It uses a disk-based storage mechanism to manage file data and metadata. It is one of the more classic file systems in the Linux system. This article will deeply explore the disk storage mechanism in the Linuxext2 file system, including key concepts such as disk partitions, group descriptors, index nodes, data blocks, etc., and provide corresponding code
- Linux Operation and Maintenance 452 2024-03-14 10:09:04
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- Detailed explanation of the physical structure of the ext2 file system under Linux
- Detailed explanation of the physical structure of the ext2 file system under Linux. In the Linux system, ext2 is a commonly used file system type. It is a relatively simple and efficient file system. In this article, we will delve into the physical structure of the ext2 file system, including super blocks, group descriptors, inode tables, data blocks, etc., and also provide specific code examples to help readers better understand. 1. Super block (SuperBlock) The super block is one of the most important data structures in the ext2 file system.
- Linux Operation and Maintenance 1184 2024-03-14 10:03:04
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- How to use the source command in linux
- In Linux, the source command is usually used to re-execute the newly modified initialization file so that it takes effect immediately without having to log out and log in again. Its basic usage is: source filename, where filename must be an executable script file.
- Linux Operation and Maintenance 1366 2024-03-14 09:40:33
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- Check if the port is open in linux
- How to check whether the port is open in Linux: 1. Use the netstat command; 2. Use the ss command; 3. Use the lsof command; 4. Use the telnet command.
- Linux Operation and Maintenance 654 2024-03-13 16:17:37
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- linux view system information
- How to view system information in Linux: 1. View CPU information. Use the lscpu command to display detailed information about the CPU, including architecture, model, number of cores, number of threads, etc. The cat /proc/cpuinfo command can also view detailed information about the CPU, and Specific configuration of each core; 2. View memory information. Use the free -h command to view memory usage, including total memory, used memory, free memory, etc., and display it in a human-readable format, etc.
- Linux Operation and Maintenance 1286 2024-03-13 15:36:43
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- How to install linux system
- Steps to install the Linux system: 1. Insert the boot media; 2. Enter the BIOS settings; 3. Start the installation program; 4. Select the installation language; 5. Configure the keyboard layout; 6. Select the installation method; 7. Set the partition; 8. Settings Network and host name; 9. Create user and set password; 10. Start installation.
- Linux Operation and Maintenance 865 2024-03-13 15:24:03
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- How to check cpu usage in linux
- How to check CPU usage in Linux: 1. top command; 2. htop command; 3. vmstat command; 4. mpstat command; 5. GNOME System Monitor; 6. KDE System Guard; 7. nmon; 8. Write scripts for monitoring .
- Linux Operation and Maintenance 1067 2024-03-13 15:18:33
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- How to solve the problem of No such file or directory when executing a file in Linux
- Solution: 1. The file path is wrong, make sure the entered file path is correct; 2. The file does not exist, make sure the file to be executed actually exists in the specified path; 3. Permission issues, you can use the ls -l command to check The permissions of the file, and make sure you have execution permission; 4. If there are missing dependencies, you can use the ldd command to check the dependencies of the file and make sure all dependencies are installed; 5. The file format is wrong, make sure you are running the file that is suitable for the system architecture. .
- Linux Operation and Maintenance 1581 2024-03-07 15:21:54
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